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Author : Ian D. Cohen
Publisher : Unknown
Page : 50 pages
File Size : 46,8 Mb
Release : 1983
Category : Airplanes
ISBN : UOM:39015095140128
Author : Ian D. Cohen
Publisher : Unknown
Page : 45 pages
File Size : 48,9 Mb
Release : 1983
Category : Airplanes
ISBN : OCLC:10873766
Author : Anonim
Publisher : Unknown
Page : 324 pages
File Size : 51,7 Mb
Release : 1992
Category : Aeronautics
ISBN : MINN:30000002754608
Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 43,9 Mb
Release : 1984
Category : Government publications
ISBN : WISC:89015139215
Author : Anonim
Publisher : Unknown
Page : 1252 pages
File Size : 49,7 Mb
Release : 1984
Category : Government publications
ISBN : UIUC:30112063912148
Author : United States. National Environmental Satellite, Data, and Information Service. Library and Information Services Division
Publisher : Unknown
Page : 606 pages
File Size : 52,5 Mb
Release : 1983
Category : Electronic
ISBN : STANFORD:36105133452669
Author : Environmental Science Information Center. Library and Information Services Division
Publisher : Unknown
Page : 16 pages
File Size : 47,5 Mb
Release : 1984
Category : Ecology
ISBN : PSU:000072044414
Author : Assessment and Information Services Center (U.S.). Library and Information Services Division
Publisher : Unknown
Page : 606 pages
File Size : 53,7 Mb
Release : 1983
Category : Earth sciences
ISBN : IND:30000090024989
Author : Robert O. Berthel
Publisher : Unknown
Page : 52 pages
File Size : 45,6 Mb
Release : 1981
Category : Airplanes
ISBN : UOM:39015095141803
This investigation presents simulated environments of ice crystals to computer analysis as a means of imitating particle measurements made by electro-optical devices such as the Particle Measuring System's 1-D instrument. A mathematical model is developed so that single crystals of known geometric form can be processed by considering each crystal's spatial relationship to the assumed measuring instrument. Crystal orientation is defined using a random number technique. The results of the assumed measurements are converted into mass of equivalent liquid water by different methods and are compared with the known mass of the simulated environment. Relationships are derived for the conversion of several forms of single ice crystals into terms of equivalent melted diameters of liquid water and a comparison is made between the mass calculated from the derived equations with the conversion equations relating measured length to equivalent melted diameter currently in use.
Author : V. G. Plank
Publisher : Unknown
Page : 370 pages
File Size : 41,8 Mb
Release : 1991
Category : Aerosols
ISBN : UCSD:31822009261652
Author : U.S. Air Force Geophysics Laboratory
Publisher : Unknown
Page : 218 pages
File Size : 41,7 Mb
Release : 2024-06-02
Category : Aeronautics
ISBN : CHI:38966377
Author : Anonim
Publisher : Unknown
Page : 252 pages
File Size : 54,6 Mb
Release : 1980
Category : Science
ISBN : CORNELL:31924057177721
Author : Hugh J. Sweeney
Publisher : Unknown
Page : 52 pages
File Size : 54,7 Mb
Release : 1985
Category : Cloud physics
ISBN : UOM:39015095141209
This report summarizes work done as part of the aircraft icing probabilities program. It contains a look at icing in layer-type clouds, a comparison of Particle Measuring System (PMS)2-D data from two flights. and a look at additional data obtained from researchers in the Federal Republic of Germany. The parameters measured in a warm and cold layer-type cloud near Peoria, IL are analyzed and compared. Liquid water content (LWC), cloud depth, particle diameter and particle concentration are compared. Variations of these parameters are compared. In mature clouds, where droplet sizes are approximately equal, the LWC is directly related to the number concentration. The icing rate, LWC and droplet size all increase as a function of height above cloud base. Synoptic patterns and PMS 2-D data obtained on two flights are compared. The first flight, made near Greensboro, NC was in an area of heavy precipitation. The large particles present produced very little icing. The other flight, near Flint, MI was in an area which was experiencing only spotty precipitation. The aircraft, however, experienced moderate icing. Data gathered on aircraft observations in the Federal Republic of Germany are examined. The data show that in strong icing situations, there are many particles with diameters of 10 to 20 microns. The results match those obtained by our research flights. Keywords: Cloud physics; Aviation meteorology; Particle distribution.
Author : Morton Glass
Publisher : Unknown
Page : 64 pages
File Size : 55,5 Mb
Release : 1981
Category : Airplanes
ISBN : UOM:39015095141480
A series of passes on 6 December 1979 through multilayered-supercooled stratiform and stratocumulus clouds by the Air Force Geophysics Laboratory's instrumented C-130E cloud physics research aircraft is used to evaluate a Rosemount Ice Detector. The response of the detector to icing conditions is compared with measurements from a J-W liquid water content meter and the Knollenberg Axial Scattering Spectrometer Probe (ASSP). A procedure to adjust for zero drift of the J-W instrument is developed. Comparison of liquid water measurements from the J-W and from the ASSP indicate that these data are highly correlated and similar in magnitude. A procedure for extracting useful information from the Rosemount Ice detector has been developed. The icing conditions in the cloud systems studied are typical of the range of conditions in winter stratiform clouds. Liquid water (LWC) values of 0.3 g/cu m and median volume diameters of 15 micrometers were most frequently observed. The results of the analysis show that the Rosemount Ice Detector is a sensitive indicator of the fluctuations of liquid water in clouds with LWC not exceeding 0.8 g/cu m -3.